owner rupert murdoch arrived in london today in a bid to limit damage to the rest of his media empire. >>> and the shuttle "atlantis" arrives at the international space station one last time a short time ago. the astronauts were welcomed aboard by the station's current crew. they have brought along a year's worth of supplies, and it's going to take them about a week to unload all of it. >>> join me for more news at the top of the hour. back to "fareed zakaria: gps" in a moment. >> okay. put your thinking caps on far moment. which continent has six of the world's ten fastest growing economies? which continent is projected to have the world's third largest city by population in just a few years? which continue nen has the world's newest nation? if you picked asia, that's wrong. one more question might help you get the answer. which continent has seven of the top ten failed states in the world? the continent, of course, is africa. that's what i want to talk to my two terrific guests about. nicholas kristof and peter godwin, african-born author and reporter. both are just back from africa